Question:
Identify the element for which electronic configuration in $+3$ oxidation state is $[\mathrm{Ar}] 3 \mathrm{~d}^{5}:$
Correct Option: , 4
Solution:
$\mathrm{Fe}^{3+}[\mathrm{Ar}] 3 \mathrm{~d}^{5}$
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